GE ApexPro TT, Technical Manual

Page: 97 / 192

Troubleshooting
2001989-351A ApexPro™ 5-13
Acceptance criteria
The transmitter's carrier level should be 30 dB or more below the transmitter’s
modulated output. For example, if a transmitter’s modulated output is -55 dB, its
carrier level should be -85 dB or lower. If the carrier level is higher, the transmitter
needs repair.
Receiver subsystem troubleshooting
Receiver Subsystem LED status chart
Transmitter
TTX number
Transmitter
serial number
Transmitter
carrier level (dB)
from step 13
Transmitter
modulated data
level (dB)
from step 19
LED Solid Green
Flashing
Green
Solid Yellow Flashing Yellow Blank
System
Status Normal
Operation System
Initialization System Error –
System Halted Software updating or
Blink rack command at CIC Pro
Power off
Receiver 1 Normal
Operation Module 1
Initialization Module 1 Error Single Receiver Error on
Module 1 or
Blink rack command at CIC Pro
Not installed
Receiver 2 Normal
Operation Module 2
Initialization Module 2 Error Single Receiver Error on
Module 2 or
Blink rack command at CIC Pro
Not installed
Receiver 3 Normal
Operation Module 3
Initialization Module 3 Error Single Receiver Error on
Module 3 or
Blink rack command at CIC Pro
Not installed
Receiver 4 Normal
Operation Module 4
Initialization Module 4 Error Single Receiver Error on
Module 4 or
Blink rack command at CIC Pro
Not installed
Link/Collision Link
Established N/A N/A Ethernet Collision Occurred Not
connected to
host
Transmit/
Receive N/A Ethernet
Transmission
N/A Ethernet Reception No transmit
or receive